linux-kernel - Re: [Xen-devel] [PATCH 1/3] Add mcelog support for xen platform

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Message-ID: <4F9582C2.6020009@zytor.com>
Date:	Mon, 23 Apr 2012 09:26:42 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	"Liu, Jinsong" <jinsong.liu@...el.com>
CC:	"Luck, Tony" <tony.luck@...el.com>, Borislav Petkov <bp@...64.org>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	"x86@...nel.org" <x86@...nel.org>,
	"linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [Xen-devel] [PATCH 1/3] Add mcelog support for xen platform

On 04/23/2012 08:43 AM, Liu, Jinsong wrote:
> 
> and, hypervisor only record error into its mc_info cookie (in its
> own format), it doesn't care what's dom0's version and how dom0 translate it
> -- that's dom0's business. The role of hypervisor is virtual 'platform',
> just like h/w platform don't care what linux version runs over it.
> 

And this is the *OTHER* problem with Xen.  A platform is only a platform
if it is documented.  There are a number of PV hypervisors which *are*
documented in detail, but Xen is not one of them.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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